diff options
| author | Dave Chinner <dchinner@redhat.com> | 2021-04-06 07:03:24 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-04-07 14:37:07 -0700 |
| commit | b2941046ea85d2cd94b485831bf03402f34f4060 (patch) | |
| tree | 1c930385ea564d42a3e9353a1d4b7d3076da37a3 /fs/xfs/libxfs | |
| parent | 683ec9ba887d096a6cbd9a5778be9400efe6468c (diff) | |
xfs: precalculate default inode attribute offset
Default attr fork offset is based on inode size, so is a fixed
geometry parameter of the inode. Move it to the xfs_ino_geometry
structure and stop calculating it on every call to
xfs_default_attroffset().
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Tested-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Diffstat (limited to 'fs/xfs/libxfs')
| -rw-r--r-- | fs/xfs/libxfs/xfs_bmap.c | 21 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_bmap.h | 1 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_shared.h | 4 |
3 files changed, 15 insertions, 11 deletions
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 61bd20ecdda1..402ecd610360 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -94,6 +94,15 @@ xfs_bmap_compute_maxlevels( mp->m_bm_maxlevels[whichfork] = level; } +unsigned int +xfs_bmap_compute_attr_offset( + struct xfs_mount *mp) +{ + if (mp->m_sb.sb_inodesize == 256) + return XFS_LITINO(mp) - XFS_BMDR_SPACE_CALC(MINABTPTRS); + return XFS_BMDR_SPACE_CALC(6 * MINABTPTRS); +} + STATIC int /* error */ xfs_bmbt_lookup_eq( struct xfs_btree_cur *cur, @@ -192,19 +201,9 @@ uint xfs_default_attroffset( struct xfs_inode *ip) { - struct xfs_mount *mp = ip->i_mount; - uint offset; - if (ip->i_df.if_format == XFS_DINODE_FMT_DEV) return roundup(sizeof(xfs_dev_t), 8); - - if (mp->m_sb.sb_inodesize == 256) - offset = XFS_LITINO(mp) - XFS_BMDR_SPACE_CALC(MINABTPTRS); - else - offset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS); - - ASSERT(offset < XFS_LITINO(mp)); - return offset; + return M_IGEO(ip->i_mount)->attr_fork_offset; } /* diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h index 6747e97a7949..a49df4092c30 100644 --- a/fs/xfs/libxfs/xfs_bmap.h +++ b/fs/xfs/libxfs/xfs_bmap.h @@ -185,6 +185,7 @@ static inline bool xfs_bmap_is_written_extent(struct xfs_bmbt_irec *irec) void xfs_trim_extent(struct xfs_bmbt_irec *irec, xfs_fileoff_t bno, xfs_filblks_t len); +unsigned int xfs_bmap_compute_attr_offset(struct xfs_mount *mp); int xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd); int xfs_bmap_set_attrforkoff(struct xfs_inode *ip, int size, int *version); void xfs_bmap_local_to_extents_empty(struct xfs_trans *tp, diff --git a/fs/xfs/libxfs/xfs_shared.h b/fs/xfs/libxfs/xfs_shared.h index 8c61a461bf7b..782fdd08f759 100644 --- a/fs/xfs/libxfs/xfs_shared.h +++ b/fs/xfs/libxfs/xfs_shared.h @@ -176,8 +176,12 @@ struct xfs_ino_geometry { unsigned int agino_log; /* #bits for agino in inum */ + /* precomputed default inode attribute fork offset */ + unsigned int attr_fork_offset; + /* precomputed value for di_flags2 */ uint64_t new_diflags2; + }; #endif /* __XFS_SHARED_H__ */ |